Blank-book tool



(No Model.)

J. O. PORMAN.

BLANK BOOK TOOL.

No. 398,825. Patented Mar 5, 1889.

.W n- T N E v N W N E5 5 E s,

N. PETEfiSY Phowuhngrapher. Washmgmn, D. c

UNITED STATES PATENT OFFICE.

JONATHAE C. FORMAN, OF CLEVELAND, OHIO.

BLANK-=BOOK TOOL.

SPECIFICATION forming part of Letters Patent No. 398,825, dated March 5, 1889.

Application filed October 23, 1888. F$erial No. 288,980. (No model.)

The nature of my invention consists of a metallic tool or article for use in the manu- 3 facture of blank-books in laying, folding, rubbing, and flattening down the stitched signatures, &c., in book-binding.

The tool aforesaid is preferably made of l l l aluminum metal in alloy thereof, having the 3 required degree of weight, strength, hardness,

and as best adapted to resist the oxidatin g in- 1 fluence to which it is subjected in its use. These essential properties are required in the 5 article for the purpose above mentioned, to

prevent the paper and binding of books from being discolored and injured by a metallic X- id e, which is an important consideration, espe eially so in fine work and books.

For a more full and com] )lete desm'iption of the said article or tool, reference will be had to the l'olhnving specification and the annexed drawings thereof.

.l igure it is a longitudinal view of the tool or article. the line 41; .1. Fig. 1. tion in line .r .1." in Fig. 1.

Fig. l is a longitudinal section in 1 Fig. is a transverse see- Like letters denote like parts in the draw- 1 ings and specification.

The proportions of the article are about nine inches long, one inch and a q uarter wide, and three-sixtecnths of an inch in thickness at the central part, and in weight about eight ounces. These proportions may, however, be changed as the nature of the binding work should require. The general form of the tool is shown in the drawings, which consists of the plate A,having, preferably, parallel edges l3 13, Fig. l, and tapering from the central part to the terminals (f I), as in Fig. In cross-section it is of an elliptical form. (Seen in Fig. The terminal I) is semicircular or curved and tapering to a blunt edge.

end (7 is straight, with round corners, as shown i in Figs. 1 and I do not confine myself to this specific form, as it may be modified to the character of the book-binding work for which it is used and retain the essential fea- The 1 tures of the invention as hereinbefore described.

It is understood in the art of book-binding that in gluing up the book-back portions of the glue will flow in among the leaves, to the injury of the paper and book, owing to the signatures or sections not being sufficientlycompact and flattened down. To avoid this inflow of glue, the sewed sections or signatures should be evenly laid and thoroughly rubbed down between the bands, and the points of the bands tapped down to make the swell of the book uniform and the signatures and sections compact, thereby preventing the glue from flowing only to a limited extent between the separate folds or leaves of the book.

The said new article or tool, having the properties of weight, form, strength, endurance, and resistance to oxidation, is designedly well adapted to the purpose of laying, folding, rubbing, and flattening down the sections and signatures between the bands and tapping down the band-points to cause a uniform swell ot' the book and to arrest the inllowot' the glue between thelolds and leaves.

This article is especiallynecessary in binding blank account-books of the commercial class. It isot that strength in its material as not to be broken in its designed use, of such hardness as to resist the frictional wear to which it. is subjected, the sides, ends, and edges are uniformly smooth and even, and the metal being non-oxidizable by the said use renders it an indestructible article for the purpose herein described as to its general form and shape.

What I claim as my invention, and desire to secure by Letters Patent, is

A new article of manufacture, consisting of an aluminum-alloy tool, having the plate A, of an elliptical form in cross-section, with blunt edges B B, a curved terminal, D, and a straight end, O, having round corners and blunt edges, substantially as herein set forth, and for the purpose described.

In testimony whereof I affix my signature in presence of two witnesses.

JONATHAN C. FORMAN.

Witnesses:

W. H. BURRIDGE, B. F. Emma, 

